75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
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# -*- coding: utf-8; -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2018 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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DataSync for Milo
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"""
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from __future__ import unicode_literals, absolute_import
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from sqlalchemy.orm.exc import NoResultFound
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from rattail.datasync import NewDataSyncImportConsumer
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from corepos.db import Session as CoreSession, model as corepos
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class FromCOREPOSToRattailBase(NewDataSyncImportConsumer):
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"""
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Base class for CORE POS -> Rattail data sync consumers.
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"""
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handler_spec = 'rattail_corepos.importing.corepos:FromCOREPOSToRattail'
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def begin_transaction(self):
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self.corepos_session = CoreSession()
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def rollback_transaction(self):
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self.corepos_session.rollback()
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self.corepos_session.close()
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def commit_transaction(self):
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# always rollback here, we don't want any accidents in CORE POS
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self.corepos_session.rollback()
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self.corepos_session.close()
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class FromCOREPOSToRattailProducts(FromCOREPOSToRattailBase):
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"""
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Handles CORE POS -> Rattail sync for product data.
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"""
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def get_host_object(self, session, change):
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if change.payload_type == 'Product':
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try:
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return self.corepos_session.query(corepos.Product)\
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.filter(corepos.Product.upc == change.payload_key)\
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.one()
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except NoResultFound:
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pass
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else:
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# try to fetch CORE POS object via typical method
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Model = getattr(corepos, change.payload_type)
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return self.corepos_session.query(Model)\
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.get(int(change.payload_key))
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